Five generally used tools in one, a necessary toolkit.

Including:

Flashlight - Fast and simple. Auto turn on, quickly give you brightness when you're in darkness. Built in SOS signal.

Dual Level - The Best tool to level any surface.

Battery Master - Tells you how many hours you have left for: Standby, Music Play, Video Play, 2D/3D Game, etc.

Calculator - A simple but practical calculator for life.

Unit Converter - Any easy tool for unit conversion between metric, Imperial and American units.Includes 12 normal kinds measurements.For example,Weight,Length,Area,Volume,Energy,Temperature,Power,Force,Angle,Velocity,Time,Data Storage